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Week 3 on the Healy-First week of science

Author:
MacKenzie Smith
Host Vessel:
USCG Healy

This week the day shift went through A LOT of trouble shooting. It’s not a good thing but I was super excited because I got to learn a lot.

There are two shifts for the STARC people. Both shifts are 12 hours long. Amitav and Austin are on the night shift (midnight to noon), Kristin and I are on the day shift (noon to midnight) Daniel and Danyelle are the floaters, however Daniel was mainly the day shift with Kristin and I. The scientists were also on around the clock and had a split between day shifters and night shifters. The coast guard is ALSO on around the clock shifts. Because of this we are doing CTD’s all day every day.

First hour into the first shift: test run of the CTD and the Bongo nets. I helped one of the fish people (zooplankton scientists) put together the bongo nets and the fastcat on deck. The scientists are super excited like young children on Christmas eve.

One of the STARC members (Kristin) and I watched the CTD for its first decent into the deep (just a test). Noticed that the pump on the CTD was offset by -5.227 (out of water should read 0?). Kristin is emailing seabird to get the OK to recalibrate the offset before the first cast at 8pm. In addition to this incident, early this morning we noticed that the temperature sensor on the bow was WAY off. We got a spare ready and sent one of the STARC people, Daniel (Dan the Man) to climb up and switch it out. We watched the MET display while he climbed, everything seemed fine until the MET display started to show all the instruments on the bow INOP! somehow the rabbit fried and all the instruments hooked into the rabbit were no longer sending data. Poor Dan has to climb back up tomorrow in the freezing cold winds to figure out what the heck happened.

Second day into this and the pressure sensor is a no go. We removed the little spigot to check the oil and there was no oil… ooops. We changed out the fish with the back-up fish (the one I set up!). Got SUPER muddy. It was a race against the clock because we were closing in on the first station. We got it done in the nick of time and looked like super heroes.

The pressure on the replacement fish is showing an inappropriate value as well. But it’s not as bad as the first fish. This issue was new to the STARC people as Seabird is usually perfect so it was a learn as you go type of operation. We got a few CTD casts in because, “(Ship) Time is money; money is power; power is pizza; pizza is knowledge”, then the gas group (Dr. Jess and her cool crew) had issues with water from one of the niskin bottles. They weren’t getting the same flow as they usually do. The first running theory was a jelly got stuck in one of the bottles and in the process let out some of the water. The working theory was someone accidently sampled twice or mis sampled (or was it sabotage? Dun dun dun!!!). Any who, we took a good looking at the niskin bottles in question and then ran two tests on the next two dry CTD cast (dry CTD cast means no water samples but we took 4 samples at the bottom of each cast to test the bottles). Everything checked out, no cracks or leaks and the flow rate was a flawless symphony. I have a video of the flow rate of the water coming out of the niskin nipples; Jess, may or may not have, held a photoshoot for Captain Aurora (Lego man she brings on all of her science cruises).

On the Daniel front (remember the wonky temperature gauge and the fried rabbit?). Daniel got to climbing but due to conditions did a quick secure of the instruments before he tackled the rabbit (circuit board) down under (bow of boat, main deck). I’m not completely sure on all the detail of his fine tuning but as far as I could tell and understand he disconnected the rabbit, tossed it aside and individually connected the wires to serial; basically, doing the same thing the rabbit was doing but with less collateral. In the morning he will be climbing again. In the midst all of this debauchery, Bob the God (Chief Scientist, Robert Pickart) was a little less than satisfied about the pressure data from the CTD. Since the pressure offset wasn’t linear, fixing the data after a cast to reflect proper pressure (also there isn’t anything else giving us a reference pressure) is very difficult if even possible (maybe it is but it seems crazy to me).

We need a working CTD asap! Luckily, we weren’t too far from Nome and had consistent communication with STARC personal on land so we were able to get a CTD flown out to Nome (Side note: the plane was delayed about 5 hours so the cruise is standing by to stand by). On the other hand, the coast guards had to get a part dropped because there was a leak in one of the engines (one of the casualties from the first transit). What I mean by “dropped”: a helicopter flies out to the middle of the ocean where the Big Healy is hanging out, then they throw the part out of the copter and into the big ocean. Healy has a small boat drive out to where they dropped the package and scoop it up. Then the small boat returns to the Healy and hoists the part up on deck.

On a personal note: I was doing a deep squat to get some sensors out of a box in the main lab and ripped my pants like SpongeBob did in season 1. I only have two pairs of jeans with me so I had to patch the hole in my pants with duct tape.

Every Tuesday and Thursday there is a science presentation in the conference lounge. Today I attended a presentation By Dr. Jess Cross from NOAA called “Mooring to Money”. She discussed her work with Ocean Acidification, Climate change and the effects of these on Alaskan communities. Jess did a brilliant job on this presentation and concluded with a quote that really stuck with me: “Climate Change not Climate Doom”. The science presentations are really grate as they bring you back to the big picture and remind everyone why we are doing what we do. It’s easy to get lost in the details when immersed in work on the ship.

The rest of the day was a pretty low-key compared to the previous half of the week. I adjusted the Science Sea Water (SSW) and read up on the fluorometer and transmissometer.

The food is starting to get weird? We have moved from name brand chocolate chewy bars to generic brand oatmeal raisin chewy bars. Also, the movie channel stop working but at last we still have ice cream!

I took a selfie with the CTD after I gave it a bath (to prevent biofouling). The CTD is still my favorite instrument!

This material is based upon work supported by the National Science Foundation under Grant Numbers DRL/ITEST 1312333 and DUE/ATE 1104310. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.